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Fat Man's Pass – Hidden Valley Tunnel loop from Arizona Mills

Routes

Running trails & routes

Fat Man's Pass – Hidden Valley Tunnel loop from Arizona Mills

Hard

5.0

(2940)

12,558

runners

Fat Man's Pass – Hidden Valley Tunnel loop from Arizona Mills

03:04

24.1km

480m

Running

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is accessible with public transport.

Last updated: April 5, 2026

Waypoints

Start point

Bus stop

Get Directions

2.87 km

Pima Canyon Trailhead

Highlight • Trail

The Pima Canyon Trailhead is one of the most popular trailheads for the South Mountain Preserve. There are a bunch of different trails that start/finish in the parking lot (including …

Tip by

4.54 km

Desert Classic Trail

Highlight (Segment) • Trail

The Desert Classic Trail is one of the smoother, flatter trails in the preserve. There are still some rolling hills along the path, but it's really more of an access …

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14.1 km

Buena Vista Lookout

Highlight • Viewpoint

If you want to tackle the National Trail, start at Pima Canyon Trailhead and climb the National Trail until you reach Buena Vista Lookout. Then turn around and enjoy the downhill.

Tip by

15.1 km

National Trail

Highlight (Segment) • Trail

Wow, what a trail. If you are looking for a great workout, try to climb all sections of the National Trail starting at Pima Canyon Trailhead. The climbing is really …

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16.8 km

Fat Man's Pass

Highlight • Natural Monument

A fascinating geological find where two large boulders create a tight squeeze. Its name originates from the size of the narrow passage, and as you may have guessed it, making …

Tip by

17.8 km

Hidden Valley Tunnel

Highlight • Cave

This tunnel consists of boulders intricately intertwined to form a stunning natural formation. Take advantage of the chance to take unique and creative photos in this diverse rock formation. Also, …

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19.9 km

Stone Arch Bridge

Highlight • Bridge

A remarkable leftover building from the depression era of the 1930's, where Civilian Conservation Corps and some 4000 men built over 40 miles of hiking trails. They made sure to …

Tip by

24.1 km

End point

Bus stop

Way Types & Surfaces

Way Types

14.9 km

4.55 km

2.75 km

1.28 km

608 m

Surfaces

16.1 km

4.57 km

1.11 km

882 m

845 m

525 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (730 m)

Lowest point (370 m)

Weather

Saturday 23 May

36°C

22°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Fat Man's Pass – Hidden Valley Tunnel loop from Arizona Mills

Pima Canyon Trailhead

Desert Classic Trail

Buena Vista Lookout

National Trail

Fat Man's Pass

Hidden Valley Tunnel

Stone Arch Bridge

Nearby routes

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